Roller stock pusher for screw machines



April 26,1932. E. R; DINGELL ROLLER STOCK PUSHER FOR SCREW IACHIIIBS i iled July 1. 1931 m W mw w .w v M w n Patented Apr. 25, 1932 Application filed .iul 1,; 1931; serial n My invention relatesto stock pushers for automatic or hand screw machines and provides a device of this character embodying a shell having a plurality of equally spaced rollers adapted to rotatewithin the shelland to contact the bar stock sufficiently to convey the end of the same to the operating tools.

Theoutstanding advantage of myinvention is that it protects the bar stock front being scratched, markedor otherwise injuredas result of the stock pushers of the present time, which are usually made of a splittubular construction, and the sliding upon the bar causes the inner surface thereof to wear to such extent that it must be replaced an entire new tool, whereas in my invention as;

the hardened rollers become worn the-complete tool may be placed in order'as anew one by merely replacing the worn rollers with new ones, which would be considerably much less expensive than replacingthe; enj r g nevertheless susceptible :to certain'iminory I tire tool.

The invention possesses further advan 'tages, all of which will be clearly revealed- 2 during the course of'the following detailed description, illustrated throughout "the ac-f companying drawings, and more fully point;

' ed out infthe appended claims 0 With direct reference to the drawings:

s and throughthe center thereof,

- Figure 2 is a side elevation, and'fFigureS;

is an end elevation. 7

Figure 4 is a section i upon line 4-4: of Figure 2, and Figure5is a section taken upon line 5-5 of Figure 2.

Figure 6 is a .fragmentaryiview ofio ne of'l 3 the rollers and locking elements. V a The invention comprisesshell l-which is provided with externally threaded" shank 2 adapted to engage the "internallvthreaded supporting tube A1 Shell 1*has enlarged Wall as indicated at?) to providefmetal of 4 ample thickness for-pockets therein to accom- 'Inodate a plurality of rollers 4, and the: said rollers to contact bar stock B. as clearly indicated inFigures l and '5. a i

A novel feature is arranged to prev eritroll- V I ers 4 form working'out of shell 1,;and-for this v k v 10f. thei saidiirollersaa, threaded hole is lpro! i i screw'5, and I the' 'slots of 'the" said screws are "which is of a" spring inature; this is clearly:v s

gated-slots, ,7: ar provded' -in the j shell 1, and are i dian'1'etricallyopposed; Las indicated in I to, provideiadequate 'spriirg :in shell 1- to per- Withth'e aidqof the accompanving anyv changes of this character during any 7 v generalzz'principlejas described and Iater 7' p claimedwould'be consistently avoided] Figurel is a longitudinal sectionfiofthe complete invention inthe. act of operation;

'a principalftubular shell for the same, the i a I y p 7 said' shellflto',telescopically"engage the bar I taken substantially v the said bar stock to the operating tools thereasflaforesaid, also means for retainingthe said rollers in their respective operating position comprising a-pluralityof concentrically ar of the said "screws relatively to the backing";

"split ringfth'e said ring adapted to engagae e. rat-ad breach 5;

vided: throughportioni of the saidshell, and J the said hole adapted: to receive headless V then circumferentially:alignedand are e'fl'ectively'locked in th'isposition bysplitringfi,

Figures 2 3 andif). The vpurpose of slots? is m-i-t the same t oiibemclos ed in as rollers 4 :be-

comeworn: fHole 8 in shell 1 is: for the fapplica'tionvof :a suitable fwrench "for connecting. the deviceto;tubeA-,2 or likewise disengag- A ingpthese elements.

ingslhave hereinabove disclosed one' precis'e 5 ff embodlmentiof nyf nvent on. -The'-s'ame 1s j changesiinjlg'thdetails nf-construction thereof, however in the event of;the necessity, of "j s i pr'obablef further 'development of the inveng 1 7 tion for the] inarket, a departure from the Having thus described my invention whatroi stock beingffed. toitlie screw machine, mejans" S v: within one end ofthe saidshell' for conveying s,

for, and :this' means comprising a plurality of spaced apart rollers incircumferential for l mationswithin the "said shell, and the said rollers togc'ontact and feed the said barstock; if

rangedscrews withinthesaid shell, and (meg-9 l of the said screwsadjacent the front end of each of" thesaid rollers,' means.for lockingv all out thereof, and this means comprising a all of the slots of the said screws when they are in circumferential alignment. I

V 2. In a roller stock conveyor for screw mechines, anelongated shellfor the same, oneend of the said shell having an externally threaded shank to engage an internally threaded tubular supporting member,'the op- "posite-end of the said shell'hav'ing a wall 7 ach of the said s5 rand autofthe Said rollers to contactand convey the Said bark stock tothe operating tools'of the screw ma- 1 of an increased thickness, a plurality of spaced apart elongated pockets in circumferential formation, within the-said" enlargement, a roller adapted to fill and rotate within chine, a plurality of spaced apart screws in circumferential formation, Within the said shell, and one of the said screws adjacent the Vouterend ofieach of the aforesaid rollers to prevent the said rollers from; working out. of their originallposition, a split ring for,

the; device, the-slots of'all of the aforesaid V I 7 screws being-placed in circumferential aligni i ment and the'said ring adapted to engage all" u t 1 of the said slots for'the purpose of locking the said screws in their respective positions;

afplurality of elongated slots. within the aforesaid shell. and extending partly the length thereoffromthe enlarged end of the same, for the purpose of effecting a springin the said shellin order 'that the same may 7 be closed in for adj usting'the aforesaid rollers with relationto the aforesaidbar stock, also an aperture through the thinner wall of the said shell for theapplication of a .wrenchif". In'testim'onywhereof'I hereunto affix my signature' 7 DWARD Rt INGELLQ ism: 

